import {AbsMessage} from 'scriptable-abstract';

interface MessageState {
  recipients: string[];
  body: string;
}

const DEFAULT_STATE: MessageState = {
  recipients: [],
  body: '',
};

/**
 * Mock implementation of Scriptable's Message.
 * Provides functionality for sending messages.
 * @implements Message
 */
export class MockMessage extends AbsMessage<MessageState> {
  private static _instance: MockMessage | null = null;

  static get instance(): MockMessage {
    if (!this._instance) {
      this._instance = new MockMessage();
    }
    return this._instance;
  }

  constructor() {
    super(DEFAULT_STATE);
  }

  get recipients(): string[] {
    return [...this.state.recipients];
  }

  set recipients(value: string[]) {
    this.setState({recipients: [...value]});
  }

  get body(): string {
    return this.state.body;
  }

  set body(value: string) {
    this.setState({body: value});
  }

  /**
   * Send the message.
   * @returns A promise that resolves when the message is sent
   */
  async send(): Promise<void> {
    // In a mock environment, we'll simulate successful message sending
    return Promise.resolve();
  }

  /**
   * Clear the message details
   */
  clear(): void {
    this.setState(DEFAULT_STATE);
  }
}